.gitignore

 # Dist folder
 dist
-
 publishDocsTempFolder
 .vscode
 
-package-lock.json
-
 # Logs
 logs
 *.log

package.json

 {
   "name": "@coscine/app-util",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "This library provides utility methods for the CoScInE Apps with JavaScript.",
   "keywords": [
     "coscine",

src/app-util.ts

-export { LanguageUtil } from './util/language';
\ No newline at end of file
+export { LanguageUtil } from './util/language'
+export { GuidUtil } from './util/guid'

src/util/guid.ts

+export class GuidUtil {
+  public static isValidGuid(guid: any) {
+    if (
+      guid !== null &&
+      typeof guid === 'string' &&
+      guid.match(/[0-9A-F]{8}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{12}/i)
+    ) {
+      return true
+    }
+    return false
+  }
+  public static getResourceId() {
+    const urlParams = new URLSearchParams(window.location.search)
+    if (urlParams.has('resource_id')) {
+      const urlResourceId = urlParams.get('resource_id')
+      if (this.isValidGuid(urlResourceId)) {
+        return urlResourceId
+      }
+    }
+    return ''
+  }
+  public static getProjectId() {
+    const baseUrl = _spPageContextInfo.siteAbsoluteUrl
+    const splitUrl = baseUrl.split('/')
+    const projectUri = splitUrl[splitUrl.length - 1]
+    if (this.isValidGuid(projectUri)) {
+      return projectUri
+    }
+    return ''
+  }
+}